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19990502 sourceware import
[deliverable/binutils-gdb.git] / include / coff / alpha.h
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252b5132
RH		 1/* ECOFF support on Alpha machines.
2 coff/ecoff.h must be included before this file. */
3
4/********************** FILE HEADER **********************/
5
6struct external_filehdr {
7 unsigned char f_magic[2]; /* magic number */
8 unsigned char f_nscns[2]; /* number of sections */
9 unsigned char f_timdat[4]; /* time & date stamp */
10 unsigned char f_symptr[8]; /* file pointer to symtab */
11 unsigned char f_nsyms[4]; /* number of symtab entries */
12 unsigned char f_opthdr[2]; /* sizeof(optional hdr) */
13 unsigned char f_flags[2]; /* flags */
14};
15
16/* Magic numbers are defined in coff/ecoff.h. */
17#define ALPHA_ECOFF_BADMAG(x) \
18 ((x).f_magic != ALPHA_MAGIC && (x).f_magic != ALPHA_MAGIC_BSD)
19
20/* The object type is encoded in the f_flags. */
21#define F_ALPHA_OBJECT_TYPE_MASK 0x3000
22#define F_ALPHA_NO_SHARED 0x1000
23#define F_ALPHA_SHARABLE 0x2000
24#define F_ALPHA_CALL_SHARED 0x3000
25
26#define FILHDR struct external_filehdr
27#define FILHSZ 24
28
29/********************** AOUT "OPTIONAL HEADER" **********************/
30
31
32typedef struct external_aouthdr
33{
34 unsigned char magic[2]; /* type of file */
35 unsigned char vstamp[2]; /* version stamp */
36 unsigned char bldrev[2]; /* ?? */
37 unsigned char padding[2]; /* pad to quadword boundary */
38 unsigned char tsize[8]; /* text size in bytes */
39 unsigned char dsize[8]; /* initialized data " " */
40 unsigned char bsize[8]; /* uninitialized data " " */
41 unsigned char entry[8]; /* entry pt. */
42 unsigned char text_start[8]; /* base of text used for this file */
43 unsigned char data_start[8]; /* base of data used for this file */
44 unsigned char bss_start[8]; /* base of bss used for this file */
45 unsigned char gprmask[4]; /* bitmask of general registers used */
46 unsigned char fprmask[4]; /* bitmask of floating point registers used */
47 unsigned char gp_value[8]; /* value for gp register */
48} AOUTHDR;
49
50/* compute size of a header */
51
52#define AOUTSZ 80
53#define AOUTHDRSZ 80
54
55/********************** SECTION HEADER **********************/
56
57struct external_scnhdr {
58 unsigned char s_name[8]; /* section name */
59 unsigned char s_paddr[8]; /* physical address, aliased s_nlib */
60 unsigned char s_vaddr[8]; /* virtual address */
61 unsigned char s_size[8]; /* section size */
62 unsigned char s_scnptr[8]; /* file ptr to raw data for section */
63 unsigned char s_relptr[8]; /* file ptr to relocation */
64 unsigned char s_lnnoptr[8]; /* file ptr to line numbers */
65 unsigned char s_nreloc[2]; /* number of relocation entries */
66 unsigned char s_nlnno[2]; /* number of line number entries*/
67 unsigned char s_flags[4]; /* flags */
68};
69
70#define SCNHDR struct external_scnhdr
71#define SCNHSZ 64
72
73/********************** RELOCATION DIRECTIVES **********************/
74
75struct external_reloc {
76 unsigned char r_vaddr[8];
77 unsigned char r_symndx[4];
78 unsigned char r_bits[4];
79};
80
81#define RELOC struct external_reloc
82#define RELSZ 16
83
84/* Constants to unpack the r_bits field. The Alpha seems to always be
85 little endian, so I haven't bothered to define big endian variants
86 of these. */
87
88#define RELOC_BITS0_TYPE_LITTLE 0xff
89#define RELOC_BITS0_TYPE_SH_LITTLE 0
90
91#define RELOC_BITS1_EXTERN_LITTLE 0x01
92
93#define RELOC_BITS1_OFFSET_LITTLE 0x7e
94#define RELOC_BITS1_OFFSET_SH_LITTLE 1
95
96#define RELOC_BITS1_RESERVED_LITTLE 0x80
97#define RELOC_BITS1_RESERVED_SH_LITTLE 7
98#define RELOC_BITS2_RESERVED_LITTLE 0xff
99#define RELOC_BITS2_RESERVED_SH_LEFT_LITTLE 1
100#define RELOC_BITS3_RESERVED_LITTLE 0x03
101#define RELOC_BITS3_RESERVED_SH_LEFT_LITTLE 9
102
103#define RELOC_BITS3_SIZE_LITTLE 0xfc
104#define RELOC_BITS3_SIZE_SH_LITTLE 2
105
106/* The r_type field in a reloc is one of the following values. */
107#define ALPHA_R_IGNORE 0
108#define ALPHA_R_REFLONG 1
109#define ALPHA_R_REFQUAD 2
110#define ALPHA_R_GPREL32 3
111#define ALPHA_R_LITERAL 4
112#define ALPHA_R_LITUSE 5
113#define ALPHA_R_GPDISP 6
114#define ALPHA_R_BRADDR 7
115#define ALPHA_R_HINT 8
116#define ALPHA_R_SREL16 9
117#define ALPHA_R_SREL32 10
118#define ALPHA_R_SREL64 11
119#define ALPHA_R_OP_PUSH 12
120#define ALPHA_R_OP_STORE 13
121#define ALPHA_R_OP_PSUB 14
122#define ALPHA_R_OP_PRSHIFT 15
123#define ALPHA_R_GPVALUE 16
124#define ALPHA_R_GPRELHIGH 17
125#define ALPHA_R_GPRELLOW 18
126#define ALPHA_R_IMMED 19
127
128/* Overloaded reloc value used by Net- and OpenBSD. */
129#define ALPHA_R_LITERALSLEAZY 17
130
131/* With ALPHA_R_LITUSE, the r_size field is one of the following values. */
132#define ALPHA_R_LU_BASE 1
133#define ALPHA_R_LU_BYTOFF 2
134#define ALPHA_R_LU_JSR 3
135
136/* With ALPHA_R_IMMED, the r_size field is one of the following values. */
137#define ALPHA_R_IMMED_GP_16 1
138#define ALPHA_R_IMMED_GP_HI32 2
139#define ALPHA_R_IMMED_SCN_HI32 3
140#define ALPHA_R_IMMED_BR_HI32 4
141#define ALPHA_R_IMMED_LO32 5
142
143/********************** SYMBOLIC INFORMATION **********************/
144
145/* Written by John Gilmore. */
146
147/* ECOFF uses COFF-like section structures, but its own symbol format.
148 This file defines the symbol format in fields whose size and alignment
149 will not vary on different host systems. */
150
151/* File header as a set of bytes */
152
153struct hdr_ext {
154 unsigned char h_magic[2];
155 unsigned char h_vstamp[2];
156 unsigned char h_ilineMax[4];
157 unsigned char h_idnMax[4];
158 unsigned char h_ipdMax[4];
159 unsigned char h_isymMax[4];
160 unsigned char h_ioptMax[4];
161 unsigned char h_iauxMax[4];
162 unsigned char h_issMax[4];
163 unsigned char h_issExtMax[4];
164 unsigned char h_ifdMax[4];
165 unsigned char h_crfd[4];
166 unsigned char h_iextMax[4];
167 unsigned char h_cbLine[8];
168 unsigned char h_cbLineOffset[8];
169 unsigned char h_cbDnOffset[8];
170 unsigned char h_cbPdOffset[8];
171 unsigned char h_cbSymOffset[8];
172 unsigned char h_cbOptOffset[8];
173 unsigned char h_cbAuxOffset[8];
174 unsigned char h_cbSsOffset[8];
175 unsigned char h_cbSsExtOffset[8];
176 unsigned char h_cbFdOffset[8];
177 unsigned char h_cbRfdOffset[8];
178 unsigned char h_cbExtOffset[8];
179};
180
181/* File descriptor external record */
182
183struct fdr_ext {
184 unsigned char f_adr[8];
185 unsigned char f_cbLineOffset[8];
186 unsigned char f_cbLine[8];
187 unsigned char f_cbSs[8];
188 unsigned char f_rss[4];
189 unsigned char f_issBase[4];
190 unsigned char f_isymBase[4];
191 unsigned char f_csym[4];
192 unsigned char f_ilineBase[4];
193 unsigned char f_cline[4];
194 unsigned char f_ioptBase[4];
195 unsigned char f_copt[4];
196 unsigned char f_ipdFirst[4];
197 unsigned char f_cpd[4];
198 unsigned char f_iauxBase[4];
199 unsigned char f_caux[4];
200 unsigned char f_rfdBase[4];
201 unsigned char f_crfd[4];
202 unsigned char f_bits1[1];
203 unsigned char f_bits2[3];
204 unsigned char f_padding[4];
205};
206
207#define FDR_BITS1_LANG_BIG 0xF8
208#define FDR_BITS1_LANG_SH_BIG 3
209#define FDR_BITS1_LANG_LITTLE 0x1F
210#define FDR_BITS1_LANG_SH_LITTLE 0
211
212#define FDR_BITS1_FMERGE_BIG 0x04
213#define FDR_BITS1_FMERGE_LITTLE 0x20
214
215#define FDR_BITS1_FREADIN_BIG 0x02
216#define FDR_BITS1_FREADIN_LITTLE 0x40
217
218#define FDR_BITS1_FBIGENDIAN_BIG 0x01
219#define FDR_BITS1_FBIGENDIAN_LITTLE 0x80
220
221#define FDR_BITS2_GLEVEL_BIG 0xC0
222#define FDR_BITS2_GLEVEL_SH_BIG 6
223#define FDR_BITS2_GLEVEL_LITTLE 0x03
224#define FDR_BITS2_GLEVEL_SH_LITTLE 0
225
226/* We ignore the `reserved' field in bits2. */
227
228/* Procedure descriptor external record */
229
230struct pdr_ext {
231 unsigned char p_adr[8];
232 unsigned char p_cbLineOffset[8];
233 unsigned char p_isym[4];
234 unsigned char p_iline[4];
235 unsigned char p_regmask[4];
236 unsigned char p_regoffset[4];
237 unsigned char p_iopt[4];
238 unsigned char p_fregmask[4];
239 unsigned char p_fregoffset[4];
240 unsigned char p_frameoffset[4];
241 unsigned char p_lnLow[4];
242 unsigned char p_lnHigh[4];
243 unsigned char p_gp_prologue[1];
244 unsigned char p_bits1[1];
245 unsigned char p_bits2[1];
246 unsigned char p_localoff[1];
247 unsigned char p_framereg[2];
248 unsigned char p_pcreg[2];
249};
250
251#define PDR_BITS1_GP_USED_BIG 0x80
252#define PDR_BITS1_REG_FRAME_BIG 0x40
253#define PDR_BITS1_PROF_BIG 0x20
254#define PDR_BITS1_RESERVED_BIG 0x1f
255#define PDR_BITS1_RESERVED_SH_LEFT_BIG 8
256#define PDR_BITS2_RESERVED_BIG 0xff
257#define PDR_BITS2_RESERVED_SH_BIG 0
258
259#define PDR_BITS1_GP_USED_LITTLE 0x01
260#define PDR_BITS1_REG_FRAME_LITTLE 0x02
261#define PDR_BITS1_PROF_LITTLE 0x04
262#define PDR_BITS1_RESERVED_LITTLE 0xf8
263#define PDR_BITS1_RESERVED_SH_LITTLE 3
264#define PDR_BITS2_RESERVED_LITTLE 0xff
265#define PDR_BITS2_RESERVED_SH_LEFT_LITTLE 5
266
267/* Line numbers */
268
269struct line_ext {
270 unsigned char l_line[4];
271};
272
273/* Symbol external record */
274
275struct sym_ext {
276 unsigned char s_value[8];
277 unsigned char s_iss[4];
278 unsigned char s_bits1[1];
279 unsigned char s_bits2[1];
280 unsigned char s_bits3[1];
281 unsigned char s_bits4[1];
282};
283
284#define SYM_BITS1_ST_BIG 0xFC
285#define SYM_BITS1_ST_SH_BIG 2
286#define SYM_BITS1_ST_LITTLE 0x3F
287#define SYM_BITS1_ST_SH_LITTLE 0
288
289#define SYM_BITS1_SC_BIG 0x03
290#define SYM_BITS1_SC_SH_LEFT_BIG 3
291#define SYM_BITS1_SC_LITTLE 0xC0
292#define SYM_BITS1_SC_SH_LITTLE 6
293
294#define SYM_BITS2_SC_BIG 0xE0
295#define SYM_BITS2_SC_SH_BIG 5
296#define SYM_BITS2_SC_LITTLE 0x07
297#define SYM_BITS2_SC_SH_LEFT_LITTLE 2
298
299#define SYM_BITS2_RESERVED_BIG 0x10
300#define SYM_BITS2_RESERVED_LITTLE 0x08
301
302#define SYM_BITS2_INDEX_BIG 0x0F
303#define SYM_BITS2_INDEX_SH_LEFT_BIG 16
304#define SYM_BITS2_INDEX_LITTLE 0xF0
305#define SYM_BITS2_INDEX_SH_LITTLE 4
306
307#define SYM_BITS3_INDEX_SH_LEFT_BIG 8
308#define SYM_BITS3_INDEX_SH_LEFT_LITTLE 4
309
310#define SYM_BITS4_INDEX_SH_LEFT_BIG 0
311#define SYM_BITS4_INDEX_SH_LEFT_LITTLE 12
312
313/* External symbol external record */
314
315struct ext_ext {
316 struct sym_ext es_asym;
317 unsigned char es_bits1[1];
318 unsigned char es_bits2[3];
319 unsigned char es_ifd[4];
320};
321
322#define EXT_BITS1_JMPTBL_BIG 0x80
323#define EXT_BITS1_JMPTBL_LITTLE 0x01
324
325#define EXT_BITS1_COBOL_MAIN_BIG 0x40
326#define EXT_BITS1_COBOL_MAIN_LITTLE 0x02
327
328#define EXT_BITS1_WEAKEXT_BIG 0x20
329#define EXT_BITS1_WEAKEXT_LITTLE 0x04
330
331/* Dense numbers external record */
332
333struct dnr_ext {
334 unsigned char d_rfd[4];
335 unsigned char d_index[4];
336};
337
338/* Relative file descriptor */
339
340struct rfd_ext {
341 unsigned char rfd[4];
342};
343
344/* Optimizer symbol external record */
345
346struct opt_ext {
347 unsigned char o_bits1[1];
348 unsigned char o_bits2[1];
349 unsigned char o_bits3[1];
350 unsigned char o_bits4[1];
351 struct rndx_ext o_rndx;
352 unsigned char o_offset[4];
353};
354
355#define OPT_BITS2_VALUE_SH_LEFT_BIG 16
356#define OPT_BITS2_VALUE_SH_LEFT_LITTLE 0
357
358#define OPT_BITS3_VALUE_SH_LEFT_BIG 8
359#define OPT_BITS3_VALUE_SH_LEFT_LITTLE 8
360
361#define OPT_BITS4_VALUE_SH_LEFT_BIG 0
362#define OPT_BITS4_VALUE_SH_LEFT_LITTLE 16
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